Support Notices

SonicOS 7.3.4 and 8.2.3 Security Advisory — Gen 7 and Gen 8 Firewalls

 

SonicWall PSIRT has identified multiple high and medium severity vulnerabilities in SonicOS that affect Gen 7 and Gen 8 firewalls. Fixes are included in SonicOS 7.3.4 and SonicOS 8.2.3, scheduled for release on November 5, 2026 and November 6, 2026.

All organizations with Gen 7 or Gen 8 firewall deployments (virtual or physical) should prepare to apply SonicOS 7.3.4 (for Gen 7) and SonicOS 8.2.3 (for Gen 8) as soon as these versions are released and review the security advisory when it is published. 

Advisory Details

Planned Advisory Date 

November 6, 2026 

Advisory ID 

SNWLID-2026-0014 

Product(s) Affected 

SonicOS on Gen 7 and Gen 8 firewall products 

Issue 

Multiple high and medium severity vulnerabilities in SonicOS 

CVE identifiers will be listed in the advisory at publication 

CVSS Score 

8.8 (High) 

Impacted and Fixed Versions 

Review the table below to determine whether your firewall is impacted and which version to apply. 

Platform 

Impacted Versions 

Fixed Version 

Availability 

Gen 7 

(physical and virtual) 

SonicOS 7.3.3-7015 and older versions 

SonicOS 7.3.4-7013 and above 

SonicOS 7.3.4-7013 - 20th October, 2026. SonicOS 7.3.4-7015 - 5th November, 2026

Gen 8 

(physical and virtual) 

SonicOS 8.2.2-8015 and older versions 

SonicOS 8.2.3-8015 

Scheduled for release on November 6, 2026 

Gen 6 and Older Firewalls: Upgrade to Gen 8 

SonicOS 7.3.4 and 8.2.3 are available only for Gen 7 and Gen 8 firewalls. Gen 6 and older firewalls have reached End-of-Support (EOS), after which SonicWall no longer provides technical support or firmware updates. Customers running Gen 6 or older hardware should upgrade to a Gen 8 firewall. 

How to Upgrade from GEN6 to latest hardware  

Secure Upgrade Plus, part of the SonicWall Customer Loyalty Program, is the upgrade path for legacy SonicWall firewalls: 

  • Trade in an eligible SonicWall firewall and bundle the new Gen 7 or Gen 8 firewall with a 2- or 3-year Advanced Protection Security Suite (APSS) subscription in a single, discounted purchase. 

  • Save up to 40 percent on total annual subscription costs. 

  • Term subscriptions and eligible support can transfer from the old appliance to the new one. 

  • The 3-year hardware and security bundle formerly offered as 3 & Free is now part of Secure Upgrade Plus. 

To get started, submit an upgrade request and a SonicWall upgrade expert will contact you, or work with a SonicWall SecureFirst Partner. For Gen 6 NSv virtual firewalls, see Gen 6 NSv to Gen 8 NSv Upgrades.

IMPORTANT: Adhering to industry best practices, SonicWall does not provide support (e.g., technical support, firmware updates/upgrades,) for products that have reached End-of-Support (EOS) status. View the SonicWall Product Life Cycle Tables for more information.

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